Evaluation of in-pipe turbine performance for turbo solenoid valve system

Abstract

This study is related to the newly developed and patented turbo solenoid turbine system. In this context, a numerical study was conducted on turbines with Darrieus, Gorlov and Lucid® configurations. As a result of the tests made on turbines with a NACA0018 aerofoil profile, the Lucid® turbine produced the highest moment and also highest pressure loss. Although a 10° twisted aerofoil Gorlov turbine produced 31.3% less moment than the Lucid® turbine, it also caused 51.4% less pressure loss. Also, it was observed that a Darrieus turbine with NACA0021 profile produced 1.5% less moment and 3.3% more pressure loss than a NACA0018 profile and turbine with NACA0015 profile, which produced 9% more moment and 1.4% more pressure loss than NACA0018. On the performance impact studies of the aerofoil twist angle, 20° twisted Gorlov turbines produced 19.1% more moment and 5.5% less pressure loss than a 10° twisted aerofoil turbine. Finally, a 20° twisted Gorlov turbine with NACA0015 aerofoil profile was analyzed. Following the studies, it was observed that the 20° twisted Gorlov turbine with NACA0015 aerofoil profile gave the best result by creating a 49.3% less pressure loss, in spite of only producing 4.7% less moment than the Lucid® turbine.